Unfortunately, you may have to sacrifice the jacket unless you can find someone in the US (family member or a friend, perhaps) who can receive it and then send it on to you or you can find it somewhere like ebay.
I had a similar situation the other week when I couldn't find any UK stockists for a certain hair product I was after and none of the US websites would ship to the UK
. In the end, I discovered that I could order it from either the Harvey Nichols or the John Lewis websites, but if I hadn't found that out, then I would have given up on obtaining it
.